Improvement in processes of manufacturing steel



UNITED STATES PATENT lQFFIGE.

. FIDEL BERGHTOLD, OF oLEVELAND, 01110, ASSIGNOR To HIMSELF, THEO- DOREF. BERGHTOLD, SAMUEL THORMAN, ALOIS SOHWEIZER, CHARLES B. BERNARD, ANDJOHN S. EDWARDS, OF SAME PLACE.

IMPROVEMENT IN PROCESSES OF MANUFACTURING STEEL.

Specification forming part of Letters Patent No. 170,150, dated November23, 1875; application filed September 27,1875.

To all whom it may concern:

Be it known that I, FIDEL BEROHTOLD, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented a certain new and usefulProcess for the Manufacture of Steel; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake steel according to my invention.

This invention relates to that class of processes employed in themanufacture of steel; and it consists in melting iron and a massconsisting of various ingredients in proper proportions, as willhereinafter. more fully and at large appear.

In carrying out my invention, for the purpose of preparing the saidmass, take of pulverized cyanide of potassium, say, two pounds; ofpulverized prussiate of potash, say, onehalf pound; of borate of soda,say, two-and-a half pounds; of silicate of lead, (which may be whiteglass or any vitreous compounds of lead,) one pound; of bichromate ofsoda, onehalf pound; of charcoal, preferably ash-wood charcoal, onepound; of vegetable oil, preferably boiled 1inseed-oil, two ounces; andof liquid gum-arabic a sufficient quantity to re duce the above-namedingredients, when mixed thoroughly together, to a pasty consistency.Allow the mass thus mixed to dry,

when it may be pulverized or broken up for more convenient handling.

In preparing the iron for melting, mix with every twenty-five pounds ofthe same one ounce, more or less, of the said mass. If the iron is hardat less quantity of the mass will answer, but if soft agreater quantity.of the mass will be necessary.

The result of melting the iron and the mass herein described insubstantially the proportions named will be the production of a steelof'high quality, susceptible of any degree of tempering, of beingreadily rolled, and of being put'to all uses to which steel is capable.

What I claim as my invention is- The process herein described 'ofmanufacturing steel, consisting of melting together iron and, a masscomposed of the following ingredients, to wit: Cyanide of potassium,prussiate of potash, borate of soda, silicate of lead, (white glass),bichromate of soda, charcoal, gum-arabic, and linseedoil, in the pr0-portions and in the manner, substantially as herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FIDEL BEROHTOLD.

Witnesses:

LEVERETT L. LEGG-ETT, H. T. HOWER.

